18474950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{661}}^1$

素因数の和:729

約数の個数: 48

約数和(自身を含む): 37924656

約数和(自身を除く): 19449706

約数列:

[1, 2, 5, 10, 13, 25, 26, 43, 50, 65, 86, 130, 215, 325, 430, 559, 650, 661, 1075, 1118, 1322, 2150, 2795, 3305, 5590, 6610, 8593, 13975, 16525, 17186, 27950, 28423, 33050, 42965, 56846, 85930, 142115, 214825, 284230, 369499, 429650, 710575, 738998, 1421150, 1847495, 3694990, 9237475, 18474950]

約数ペア:

[(1, 18474950), (2, 9237475), (5, 3694990), (10, 1847495), (13, 1421150), (25, 738998), (26, 710575), (43, 429650), (50, 369499), (65, 284230), (86, 214825), (130, 142115), (215, 85930), (325, 56846), (430, 42965), (559, 33050), (650, 28423), (661, 27950), (1075, 17186), (1118, 16525), (1322, 13975), (2150, 8593), (2795, 6610), (3305, 5590)]